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Nuvoton Technology launches new NuMicro M031BT/M032BT series: Low-power BLE 5.0 and 2.4G dual-mode microcontroller

Hsinchu, Taiwan - 2021/07/15 - Nuvoton Technology launches new NuMicro® M031BT/M032BT series: a low-power BLE 5.0 and 2.4 GHz dual-mode microcontroller series based on Arm® Cortex®-M0 core operating up to 72 MHz, with up to 512 KB Flash and 96 KB SRAM. In addition to the BLE 5.0 and 2.4GHz RF wireless connectivity, the NuMicro M031BT/M032BT series feature built-in rich peripherals and analog functions for applications that need advanced and precise control functions in industrial control applications that it also requires wireless connectivity for sensor hubs in rigid working environments. The 5mm x 5mm QFN48 and 8mm x 8mm QFN68 package reduce the PCB size and RF layout difficulty. Furthermore, Nuvoton provides reference designs and rich sample codes to speed up the application development based on this M031BT/M032BT low-power BLE/2.4G RF microcontroller.

The NuMicro M031BT/M032BT series provide up to +8 dBm RF transmit power, a good receiving sensitivity of -94 dBm, 1 Mb/s, or 2 Mb/s transmission speed RF applications, and outstanding anti-noise performance in 2.4GHz interference environments to ensure communication distance and reliability. With these, the M031BT/M032BT series are expected to meet the needs of application scenarios such as industrial Internet of Things (IIoT), smart home, consumer electronics, etc.

The NuMicro M031BT/M032BT series operate at a voltage ranging from 1.8V to 3.6V. They feature a built-in 32-bit hardware divider, up to 9-channel PDMA, a 16-channel 12-bit 2 MSPS high sampling rate ADC that can run down to 1.8V low voltage, and 24-channel PWM running up to 144 MHz that can quickly respond and accurately control external devices. Besides, M031BT/M032BT also provide many peripherals such as one set USB, eight sets of 6 MHz UART supporting single-wire transmission, two sets of I2C, and up to two sets of highly flexible universal serial control interface (USCI) that can be configured as UART, I2C or SPI.

To protect intellectual property rights, the NuMicro M031BT/M032BT series are embedded with an additional security protection Flash block (Security Protection ROM, SPROM) to provide an independent and secure encrypted execution area protect critical program code. Flash lock bits are designed to provide firmware to prevent external access or write protection. In addition, there is a 96-bit unique chip identification (Unique Identification, UID) and a 128-bit unique customer identification (UCID) on each M031BT/M032BT, which significantly improves product confidentiality and code security.

Nuvoton provides complete development tools, such as the NuMaker-M031BT and NuMaker-M032BT evaluation boards, software development kits, and sample codes. In addition, free downloadable Keil® MDK is available to speed up the end-product evaluation and development cycle.

More information about the Nuvoton NuMicro M031BT/M032BT series: M031BT series; M032BT series

The NuMaker-M032BT development board is now open for sample application; interested applicants may apply online:

The M031BT/M032BT series provide rich digital and analog peripherals, low-power Bluetooth BLE 5.0 and 2.4G dual-mode communication, and excellent radio frequency networking functions. These features significantly reduce transmission power consumption, prolong battery life, and allow traditional microcontrollers with rich control functions for IIoT that need wireless connectivity. Nuvoton Technology would continue releasing new low-power Bluetooth microcontrollers for consumer devices, industrial control, smart home, and automotive applications.


About Nuvoton Technology
Nuvoton Technology Corporation (NTC) was founded to bring innovative semiconductor solutions to the market. NTC was spun-off as a Winbond Electronics affiliate in July 2008 and went public in September 2010 on the Taiwan Stock Exchange (TSE). Nuvoton Technology focuses on the developments of microcontroller, microprocessor, smart home and cloud security IC and has strong market share in Industrial, Consumer and Computer markets. Nuvoton owns a wafer fab, featuring customized processes for analog and power products. Besides in-house IC products, the wafer fab also provides part of its capacity for foundry services. Nuvoton Technology provides products with a high performance/cost ratio for its customers by leveraging flexible technology, advanced design capability, and integration of digital and analog technologies. Nuvoton values long term relationships with its partners and customers and is dedicated to continuous innovation of its products, processes, and services. The company has established subsidiaries in the USA, China, Israel, India, Singapore, Korea and Japan to strengthen regional customer support and global management. For more information, please visit

*Note: Nuvoton and NuMicro are registered trademarks of Nuvoton Technology Corporation. All other trademarks and copyrights mentioned herein are the property of their respective owners.


Product Contact

Ryan Huang

Director of Microcontroller Marketing Div.

Nuvoton Technology Corporation


Tel: +886-3-5770066 ext. 28024

News Contact

Carol Chang

Nuvoton Technology Corporation


Tel: +886-3-5770066 ext. 23123

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